Front face of a control panel for an ultrasonic cleaner



FIG. 1 is a perspective view of a front face of a control panel for an ultrasonic cleaner; and,

FIG. 2 is a front view thereof.

The broken lines illustrating an ultrasonic cleaner depict environmental subject matter that forms no part of the claimed design. 

CLAIM The ornamental design for a front face of a control panel for an ultrasonic cleaner, as shown and described. 